Results 11 to 20 of about 10,563 (231)
Overview of Solar Wind–Magnetosphere–Ionosphere–Atmosphere Coupling and the Generation of Magnetospheric Currents [PDF]
Space Science Reviews, 2017 We review the morphology and dynamics of the electrical current systems of the terrestrial magnetosphere and ionosphere. Observations from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) over the three years 2010 to 2012 are employed to illustrate the variability of the field-aligned currents that couple the ...
Milan, Stephen Eric +11 more
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Geochemistry, Geophysics, Geosystems, 2020 Thanks to mapping missions, like Ørsted, CHAMP, and Swarm, we have gained a detailed understanding of the geomagnetic field. High‐resolution models like POMME, GRIMM, or CHAOS are able to describe the main parts of the Earth's magnetic field reliably ...
Hermann Lühr, Yun‐Liang Zhou
doaj +2 more sources
Sheared magnetospheric plasma flows and discrete auroral arcs: a quasi-static coupling model [PDF]
Annales Geophysicae, 2007 We consider sheared flows in magnetospheric boundary layers of tangential discontinuity type, forming a structure that is embedded in a large-scale convergent perpendicular electric field. We construct a kinetic model that couples the magnetospheric
M. M. Echim +3 more
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Current Systems in the Earth's Magnetosphere [PDF]
Reviews of Geophysics, 2018 AbstractThe basic structure and dynamics of the primary electric current systems in the Earth's magnetosphere are presented and discussed. In geophysics, the word current is used to describe the flow of mass from one location to another, and its analog of electric current is a flow of charge from one place to another.
N. Yu. Ganushkina +2 more
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Surface conductivity of Mercury provides current closure and may affect magnetospheric symmetry [PDF]
Annales Geophysicae, 2004 We study what effect a possible surface conductivity of Mercury has on the closure of magnetospheric currents by making six runs with a quasi-neutral hybrid simulation.
P. Janhunen, E. Kallio
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Space Weather, 2021 An intriguing aspect of the famous September 2, 1859 geomagnetic disturbance (or “Carrington” event) is the horizontal magnetic (BH) data set measured in Colaba, India (magnetic latitude approximately 20°N).
Seán P. Blake +7 more
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Earth, Planets and Space, 2023 Time-varying electromagnetic field observed on the ground or at a spacecraft consists of contributions from (i) electric source currents, such as those in the ionosphere and magnetosphere, and (ii) corresponding fields induced by source currents within ...
Jingtao Min, Alexander Grayver
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Long-term evolution of magnetospheric current systems during storms [PDF]
Annales Geophysicae, 2004 We present a method to model the storm-time magnetospheric magnetic field using representations of the magnetic field arising from the various magnetospheric current systems.
N. Yu. Ganushkina +4 more
doaj +1 more source
The role of the Hall effect in the global structure and dynamics of planetary magnetospheres: Ganymede as a case study [PDF]
, 2015 We present high resolution Hall MHD simulations of Ganymede's magnetosphere demonstrating that Hall electric fields in ion-scale magnetic reconnection layers have significant global effects not captured in resistive MHD simulations. Consistent with local
Collinson, Glyn +3 more
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Models of field-aligned currents needful to simulate the substorm variations of the electric field and other parameters observed by EISCAT [PDF]
Annales Geophysicae, 1996 We have used the global numerical model of the coupled ionosphere-thermosphere-protonosphere system to simulate the electric-field, ion- and electron-temperature and -concentration variations observed by EISCAT during the substorm event of 25 March ...
M. A. Volkov +2 more
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